// JavaScript Document
function referer(){ 
if(document.form.yourname.value=="Your name")
	{
			alert("Name must be filled");
			document.form.yourname.focus();
			return false;
	}
 var str = document.form.yourname.value;
		  	var trimmed = str.replace(/^\s+|\s+$/g, '') ;
		  	if(trimmed==""){
		   		alert("Space is not allowed");
		   		document.form.yourname.focus();
		   		return false;
		  	}	
if(document.form.friendemail.value=="")
	{
			alert("Email must be filled");
			document.form.friendemail.focus();
			return false;
	}
	if(document.form.friendemail.value != ""){
				    em=document.form.friendemail.value.split(',');
					var lndsds=em.length;
					for (var i = 0; i<lndsds; i++)
					{
						email = em[i];
						if(!email.match(/^[A-Za-z0-9\._\-+]+@[A-Za-z0-9_\-+]+(\.[A-Za-z0-9_\-+]+)+$/)){
						alert("Enter the correct Email address!");
						document.form.friendemail.focus();
						return false;
				    }	
				}
	}
return true;   

}